add_subdirectory(irq)
add_subdirectory(kexc)
add_subdirectory(sys)
add_subdirectory(task)
add_subdirectory(tick)
add_subdirectory(timer)
if((${CONFIG_OS_ARCH_ARMV8}) OR (${CONFIG_OS_ARCH_X86_64}) OR (${CONFIG_OS_ARCH_RISCV64}))
    add_subdirectory(sched)
endif()
